Barrier-gate.



0. w. HANSEN'.

BARRIERv GATE.

APPLATmN AFILED JUNE 9. |91?.

:111 1919. 4 sHEETssKHEEr l.

Patented Mar,

mm mm1@ v OTTO W. .HANSEN, CHICAGO, ILLNOIS.

BARRIER-GATE.

To all whom it may concern:

Be it known that I, OTTO W. HANSEN, a

citizen of the UnitedStates, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Barrier-Gates, of which the following is a specification.

` Mydnvention relates to an improved bar-4 rier gate particularly adaptable for use at 10 bridge approaches or at railwayv or other Ldangerous' crossings.

In barrier gate structures heretofore used thegate arm was capable only of swinging in a vertical plane and when the arm was struck by a vehicle it was usually shattered and then oifered no resistance to further travel of the vehicle. One of the important objects of my invention is therefore to pro- 4duce a barrier gate structure at which' the gate arm is not only capable of swinging in a vertical plane but is also capable of swinging in a horizontal plane against 'yieldable resistance such as fluid or gas pressure, or suction, the resistance being such that the gate arm cannot be swung horizontally under ordinary pressure but will yield under extraordinary pressure so that when the aria-is 'stnnfcr-Qhy' a traveling vehicle it willyieldliorizontally but will resist further travel of the vehicle' and check its travel sufciently to stop it or so that it may be stopped by the driver before the danger zone is reached.

Another object of the invention is to provide a compact supporting structure for the gate arm comprising a base. seated in concrete and a revoluble turret thereon together with means between the turret and base for resisting turning of the turret on its vertical axis to permit horizontal swing of the gate when down. Another object ofv the `invention is to mount the gate. arm raising orl lowering'mechanism on the turret in such manner that it is all readily accessible for inspection or repair. `Another object is to provide improved means for balancing the gate arm so as to relieve the driving mechanism from unnecessary strains and to reduce concrete. Telescoping into the upper end of the necessary driving power to a minimum. Another object is to provide Yan limproved driving connection between the. main or street gate arm and asidewalk arm, which driving connection is readily separable when the .lowered street arm is swung horizontally, and anothe1 object is to provide improved means for positively keeping the Specification of Letters Patent.

Patentedlllar. 11, 1919.

" Application led JuneS, 1917.i Serial No. 173,750.

' side-walk arm in its lowered position during horizontal swing of the street arm.

The above and other features of my invention are embodied in a structure which is illustrated on the accompanying drawings in which- Figure l is a plan elevational view of a gate structure, the full lines showing the street and side-walk arms in lowered position and the dotted lines showing 'the intermediate and final position of the street arm when swung horizontally,

Fig-2 is a .side elevational view of the gate structure with the gate arms lowered,

Fig. 3 is an enlarged plan view of the gate arm supporting and controlling mechanism, the inclosing hood being broken away,

Fig. et is an enlarged side elevational view of the driving and controlling mechanism, and the supporting base and frames shown -in vertical diametral section on plane @1 -4, Fig. 8,

Fig. 5 is a side elevational view from the opposite s'ide with Vthe supporting frames and counterbalance spring in vertical diametral section,

Fig. 6'is a view taken from the left of Fig. fl with the supporting base and frames and the barrier arm shaft in vertical section,

Fig. 7 is a sectional view on plane 7 7,

Fig. 3,

Fi 8 is a sectional view on plane 8-8, Fig.

Fig.- 9 is a sectional View on plane 9-9, Fig. 4, Y

Fig. 10 is an enlarged view of the ends of opposed gate arms showing the means for connecting them yieldingly together, and

Fig 11 is a viewfrom plane 11--11, Fig. 10. A

The entire structure is supported on a concrete foundation 10 into which the cylindrical base ortwell 11- is partly sunk and secured by anchor rods 12 extending downwardly into the concrete from lugs 13. EX-

tending upwardly through the base 11 is the hub 1st. through which extends the pivot holt 15 whose head 16 is embedded in the tween the internaljgannular ledge 19 on the base 11 andthe external annular ledge 20 chambers being shown.

l ance orby-passageway these blades extend 4entirely across their respective chambers so that the resistance to turning of the'turret in the basca-nd the rate of turning is cont-rolled by the rate of flow of the liquid through the by-passagewayathe liquid entirely filling the chambers.

Extending diametrically through the tuiret is the shaft 27 to which the street arm structure A is secured. The arm structure is preferably constructed to be of great strength" and rigidity and as shown it comprisesthe front beam 28 and the rear beam 29 suitably connected by braces 30. lnplan View the structure is V -shaped and at their inner ends the beams 28 and 29. are secured to the ends of shaft 27- just outside of the turret. rl`he upper end of the turret is open and the vertical beaiing slots 3l and 32 are provided for receiving the shaft 27, and retaining cross1 plates 33 and 34 are seated in transverse grooves 35 and'36, the lower edges of the cross plates being concave to fit the top of the shaft 27, screws 37 serving thold the plates in place, the arrangement. being best shown in Figs. 4, 7 and 8.,' Withthis arrangement the gate structure A. can readily rcross plates.

be removed from the turret by removing the Mounted on top ofthe turret is the platform 38 for supporting the driving andcontrolling mechanism. A base 39 mounted o n the platformV 38 has the elevated section 40 for supporting a' driving,` motor '41, here shown' as anA electric motor. 'llie'inner end.

of the motor shaft' has' secured thereto thedriving pinion 42 which meshes with the gear 43 which is secured to' the shaft 44 journaled pinion 46 which meshes with the gea'r- '47 oriV f the shaft 48 which is j ournaled in the bean 5a -worm Wheel 50 securedthereto' which'ineshes ing standard 49... The' shaft 48 vhas also the with the worm'ivheel 51 securedfto one endbearing-standard `53, the otherend Ofsaid shaft havingYthebevel pinion f54' secured thereto'whh meshes with the,` bevel gear'l 55 which is mounted on shaft 5,6 .bet'weenthe assente shaft 56 is the-crank arm 59 which -is conp The current for'operating the motor is conducted through wires 63 which are brought f up vthrough the concrete base and through the interior of the pivot bolt l5. *A

ln order to counterbalance the weight of the heavy gate arm structure 'A and to relieve the driving motor and train from ei;- ces'sive strains and to reduce to a minimum the power 'necessary for operationprefer- -ably utilize spring means. fis' shown, the

shaftv 27 is surrounded by an inner coil spring 64 and anouter coil spring 65, the springs being one` within the other. The inner ends of Athe springs extend into a tangential pocket 66 provided in the crank frame 61,'while the outer ends of the springs engage respectively with the abutments 67 land 68 (Figs. 7. and 8). i The arrangement of the springsis suchlv that arm the springs gradually retract and-1inwind as the weight or moment decreases, the gate arm beingfperfectly counterbalanced at all times. The gate arm shaft 27, being positively connected vvithtbe' gearing train is vpositively rot-ated when the motor operates but the springs ait all times. take -up the weight of the gate arm and. thus relieve the gearing train of undue s'trainand `the nec- :essary driving power is therefore reduced l'tota'minimum. The worml gearing in the transmission trainacts as a brake and the train partsk mounted on the platform 38 are :,very readily accessible for inspection orv re'- 1 pairs and as a' protection therefor a sheet nietalhood 70 may be provided. llVhen this f gate arm will be readilyheldin anyfp'osi'f tion to which it has beenfvertically swung.-

y'11,5 The drivingmotor and the transmission" hood is removed the bolt 7l which connects V y g 5 the connecting rod 60 withithe crank 'frame of the shaft 52:.whi'ch isjjournaledi inthejGl 4can be withdrawn, and then fthe platform i i 38 With-the`motorand transmission train parts' thereon can be lifted aWay,.-and then springs and other parts within the turret arereadily accessible, and the entire gate 'arinA .can 'beI removed by disengaging the cross plates 33 and 34. y l also show al side-walk barrier arm structure B. This structure'is siipported on the bracket 72 secured to the `base 11, a support' casting. A collapsible fence 7T is supported from the beam 7 5 which hangs down rwhen the arm is in horizontal position and which collapses when the arm is raised. Thein ner end TS of the casting is enlarged to form a counterweight. Secured to the pivot pin 7st is a gear 79, and on the beam 28of the street barrier arm A a gear S0 is secured concentric with shaft '27 and meshes with gear 7 9 when the arms A and B are parallel. Then the arm A` is swung horizontally with the turret 1T the gears becomedisengaged and the side-walk arm will, remain in' its down position across the side-walk. Toprevent raising of the sidewalk arm when the gears are uncoupled, a stop 81 extends inwardly from the casting T3 to c'operate with the annular flange 82 on the turret. This flange has the slot 83 which is below the stop S1 when the gearsof the arms are\in mesh, but as soon as the arm A is swung horizontally and' the turret rotated the flange 82 will come into position under the stop and will prevent raising of the' side-walk arm.

In Figs. 1 and 2 both gate arms are shown downand extending at right angles across the street and side-walk. If a vehicle approaches the street arm A and fails to stop before reaching it, it will encounter the gate. and the gate will yield and will swing hori` wheel V86 by means of which the transmission train may be driven should the motor suddenly become inoperative.

In Figs. 10 and ll I showa means for yie-ldingly connecting together Athe ends of opposed gate armsl A and Af of a set of gate structures. On one Vgate arm the front and rear beams 284 and 29 are separated by top and bottom plates 87 and. 88 to leave a guide slot for a bar 89 which is provided at its Agate arms are lowered. Both the pins 9:2 .and'93 maybe of yielding material such as wood, but vpreferably only the inner pini92 1s of wood and the outer pin 93 of metal. Tith vthe arrangement shown, when the gate arms are lowered' the tongue 95 passes through the eye 90, and then when one of the gate arms is struck by a traveling vehicle, this arm will first swing horizontally under.

resistance, andthe arm A being also swung, its horizontal swinging resistance is added. Then the arms have been swung suiiiclently` y to bring the tongue and outer end of the eye into engagement, tension will be exerted on the inner, wooden ypin 92, and if the veh-icle zontally. but only against the resistance'of y the liquid flow past the blades 25 in the wells 24. This resistance will assist in stopping the vehicle before it reaches the danger zone andl accidents will thus be avoided. The gate is of sufficient strength to withstand heavy Vand sudden pressure while at the same time the blow will be cushioned by the movement.

of the blades in the liquid and injury to the gate structure will be prevented. Afterhorizontal swinging of-thev gateA it can readily be swung back into its normal plane. As the gate A may be struck before it has been brought entirely down I preferably suspend a chain or cable 84e from the beam -28 in which a vehicle will catch and its further pin readily giving way when the lowered"- gate is subjected to extraordinary blows or pressure. shaft of the electric .motor with a hand I also preferably provide the .ger zone.

has still considerable headway andI power, this pin will break and the gate arm will continuato swing until the inner end of the slot 91 encounters the metal bolt 93, and then the gate arms are rigidly locked together, and under most conditions the vehicle will be brought to astop and accident prevented.

After such shifting of the plate the gate arms eanbe readily swung backY into parallelism and the bar 89 returned and a new pin 92 inserted'. Thus a traveling vehicle g 110 vyill first encounter the resistance of the one gate arm, then the combined resistance of the two gatearmvs, and then the resistance of the woodenpin is added, and the. vehicle finally brought t o a. stop by the engagement of the vbar with the stronger outer pin 93.

I thus provide a veryefcient and desirable barrier gate structure which will not only extend across an approach or stree't to indicate danger, but which4 will yield when struck by a vehieTe which fails to stop and' which will assist instopping further progress ofthe vehicle before it reaches the dan- Such operation of the gate also prevents destruction thereof when it is y struck by a vehiele. Thefarrangement of the driving and,co`1 itrolli-ng. parts is such that they can be readily accessible at any timev for inspection or repairs or to vbe readily ref moved The coil springs effectively and ac.- curately Icounterbalanoe the .Weight and ioo sie

moment of the \gate` and the motor and transmission tram parts are not strained and only a small driving source or motor is fnecessary, the cost of operation of the gates stillcome within the scope of the invention.

l claim as follows: l 1. 1n a barrler gate structure, the combination of a supporting base, a turret frame lmounted on said base, a gate arm pivoted to said turret frame to swing vertically, said turret frame being adapted to rotate about its vertical axis, a blade extending downwardly from said turret into said base, and fluid confined in said base for yieldingly resisting movement of said blade and thereby turning of said base by said gate arm.

1n a barrier gate structure, the combination of a supporting base divided into a pluralityof chambers containing fluid, a turret frame pivotedon said base to close said chambers, said turret frame 'being rotatable on its vertical axis, blades extending downwardly fromsaid turret frame into said iuid chambers to cooperate with said Huid to resist turning of said turret structure, a gate armpivoted to said turret frame to swing vertically thereon, said rotatable turret frame permitting horizontal swing of the gate arm when it is down.

3. In a barrier gate structure, the combination of a cylindrical supporting base, a

plurality of -radial partitions sub-dividing the interior of said base into compartments, a turret frame pivoted on said base and closing said compartments, said compartments being filled with fluid,` blades extending downwardly from the turret frame into said compartments and extending entirely acrossy the respective compartments except for limited by-passageway whereby turning of said turret frame will be resisted, a horizontal shaft Journaled in said turret frame,

a gate arm mounted on said shaft to swing vertically, a driving motor supported onsaid turret frame, and a transmission train connecting said motor with said shaft.

4. 1n a barrier gate@ structure, thecombination 0f a hollow cylindrical supportingv frame, a shaft extending. diametrally through said frame and journaled thereon, a gate arm secured atv one end to said shaft to be swung vertically, a. top for said' frame,..

a motor mounted on said top, a transmission train supported on said top and connected at one end with said motor and at its other lend with Said shaft 'whereby said shaft can vmechanism within said frame for counterbalancingthe'weight of said gate.

.link permitting said l 5. 1n a barrier gate structure, the `combination of a supporting base, a` frame pivoted on said base for rotation on its vertical axis, a main gate arm extending from said frame to be swung laterally therewith, said gate arm being pivoted to the frame to swing vertically thereon,`an auxiliary gate arm pivotedj on said base to swing vertically,

and a driving connection between said arms adapted to be broken when said main arin swings horizontally.

6. 1n a barrier gate structure, the combination of a stationarysupporting base, a

frame pivoted on said base for rotation on itsl vertical axis, a main' gate arm pivoted on said frame to swing laterally therewith and to swing vertically with reference thereto, driving means connected with'said main gate arm for causing verticaiswing thereof, an auxiliary gate arm pivoted on said base to swing vertically, driving mechanism for swinging said auxiliary gate arm, and means for disconnecting said driving mechanism from said auxiliary gate arm when said main gate arm is swung laterally.

7. In a barrier gate structure, the combination of a supporting base, a turret frame mounted on said base, a gate arm pivoted on said turret frame to swing vertically, said turret frame being adapted to rotate about its vertical axis, and fluid brake mechanism forA resisting rotation of said turret'. 8. In a barrier gate structure, the combination of a hollow supporting frame, a shaft extending transversely through said frame and beyondthe sides thereof, a gate arm secured to the outer'ends ofl said shaft, a platform mounted on top of said frame above saidshaft, a motor and driving transmission mechanism on' said platform, a link extending through said platform for detachably connecting said transmission mechanism with said shaft, disconnection of said platform to be removed from said frame. v l

9. In a barrier gate structure, the combination of a hollow supporting frame, a shaft extending transversely'through said frame andbeyond the sides thereof, a gate arm secured to the outer ends of said shaft, a platform mounted on top of said frame above said shaft, a-motorand driving transmission mechanismv on said platform, a crank arm on said'shaft, a link extending from said transmission mechanism and connectedwith said crank arm, and a counterl f V10. Ina barrier gate structure, the combinationof a hollow supporting frame having vertical'slots in its opposite sides extending downwardly .from lthe topthereof, a shaft extending through said frame and journaled in said slots, removableJcross-plates spanning said slots above saidl shaft to hold the shaft in the slots,` a gate arm'seoured to the outer ends of the shaft, a platform bridging across the top of said frame, a driving inoto'n and a transmission train mounted on said platform, a crank arm on said shaft, 'a link extending from said transmission train and having detachable connection with said crank arm, disconnection of said link .from f `said crank. armpermitting said platform with the motor and transmission train thereon to be removed from the. frame, yand 11emoval of said cross plates then permitting said shaft to be raised out of said slots.

In vwitness whereof hereunto subscribe my name this thflay of June, A. D., 1917.

l oTTo W. HANSEN. 

